[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:3638":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":11,"polytypeof":11,"groupid":12,"weighting":13,"nolocadd":14,"blacklisted":14,"mindat_formula":15,"mindat_formula_note":11,"ima_formula":16,"elements":17,"sigelements":24,"key_elements":11,"impurities":11,"cim":25,"ima_status":26,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":28,"discovery_year":29,"strunz10ed1":30,"strunz10ed2":31,"strunz10ed3":31,"strunz10ed4":32,"dana8ed1":33,"dana8ed2":34,"dana8ed3":35,"dana8ed4":34,"csystem":36,"cclass":37,"spacegroup":38,"spacegroupset":39,"a":40,"b":39,"c":41,"alpha":39,"beta":39,"gamma":39,"aerror":11,"berror":11,"cerror":11,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":11,"csmetamict":14,"commentcrystal":11,"twinning":42,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":11,"tlform":43,"hmin":44,"hmax":44,"hardtype":11,"vhnmin":39,"vhnmax":39,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":45,"dmeas2":45,"dcalc":46,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":47,"commentluster":11,"diapheny":48,"streak":49,"colour":50,"commentcolor":11,"colors":51,"streak_colors":57,"luminescence":11,"uv":58,"cleavage":42,"cleavagetype":59,"fracturetype":11,"tenacity":60,"commentbreak":11,"opticaltype":61,"opticalsign":62,"opticalalpha":39,"opticalalpha2":39,"opticalalphaerror":11,"opticalbeta":39,"opticalbeta2":39,"opticalbetaerror":11,"opticalgamma":39,"opticalgamma2":39,"opticalgammaerror":11,"opticalomega":63,"opticalomega2":39,"opticalomegaerror":11,"opticalepsilon":39,"opticalepsilon2":39,"opticalepsilonerror":11,"opticaln":39,"opticaln2":39,"opticalnerror":11,"optical2vcalc":39,"optical2vcalc2":39,"optical2vcalcerror":11,"optical2vmeasured":39,"optical2vmeasured2":39,"optical2vmeasurederror":11,"rimin":64,"rimax":64,"opticaldispersion":11,"opticalpleochroism":65,"opticalpleochorismdesc":66,"opticalbirefringence":11,"opticalcomments":67,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":11,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":11,"other":11,"industrial":11,"occurrence":68,"otheroccurrence":11,"type_specimen_store":69,"description_short":70,"aboutname":71,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":72,"reviewed_at":11,"variety_of":11,"varieties":73,"group_members":74,"associates":118,"confused_with":119,"type_localities":130,"occurrence_total":137,"citations":138,"images":168,"structures":361,"synonyms":368,"language_names":371,"wikidata_qid":413,"texts":414},3638,"1:1:3638:8","0771fd51-a77e-4c70-9b12-2b9e70d5c3b7","Shigaite","Sga",0,"mineral",null,43295,1769,false,"Mn\u003Csub>6\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>[Na(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>](SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·6H\u003Csub>2\u003C\u002Fsub>O","Mn\u003Csub>6\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>[Na(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>](SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 6H\u003Csub>2\u003C\u002Fsub>O",[18,19,20,21,22,23],"Al","Mn","Na","O","S","H",[18,19,20,21,22,23],"25.9.8",[27],"APPROVED",1985,"1985","7","D","35","31","1","2","Trigonal",10,80,"0","9.51","32.83","On {0001}","Millimeter-sized tabular hexagonal crystals.",2,"2.32","2.35","Vitreous,Dull","Transparent","Very pale yellow to white","Pale yellow, bright yellow, golden yellow, burnt orange; brown to black if altered; deep yellow with black, inhomogenous inclusions",[52,53,54,55,56],"yellow","orange","brown","black","white",[52,56],"Not fluorescent","Perfect","flexible","Uniaxial","-","1.546",1.546,"Visible","O = yellow; E = very pale yellow","Absorption: O > E\r\nε not determined","A secondary phase in veins cutting altered manganosite-rhodochrosite-sonolite ore.","National Museum of Natural History (Smithsonian), Washington, D.C., USA, 122089.","The Mn analogue of nikischerite and poellmannite.","Named after Shiga prefecture, Japan, that includes the discovery locality.\r\n","2025-08-11 12:14:23",[],[75,81,87,97,103,111],{"id":76,"name":77,"entrytype":9,"csystem":36,"ima_formula":78,"mindat_formula":79,"hmin":11,"hmax":11,"dmeas":11,"dcalc":80,"primary_image_id":11},55457,"Erssonite","CaMg\u003Csub>7\u003C\u002Fsub>Fe\u003Csup>3+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 12H\u003Csub>2\u003C\u002Fsub>O","Mg\u003Csub>7\u003C\u002Fsub>Fe\u003Csup>3+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>[Ca(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>](SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·12H\u003Csub>2\u003C\u002Fsub>O","2.02",{"id":82,"name":83,"entrytype":9,"csystem":36,"ima_formula":84,"mindat_formula":84,"hmin":44,"hmax":44,"dmeas":85,"dcalc":86,"primary_image_id":11},27438,"Karchevskyite","Mg\u003Csub>18\u003C\u002Fsub>Al\u003Csub>9\u003C\u002Fsub>(OH)\u003Csub>54\u003C\u002Fsub>Sr\u003Csub>2\u003C\u002Fsub>(CO\u003Csub>3\u003C\u002Fsub>)\u003Csub>9\u003C\u002Fsub>(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>(H\u003Csub>3\u003C\u002Fsub>O)\u003Csub>5\u003C\u002Fsub>","2.21","2.18",{"id":88,"name":89,"entrytype":9,"csystem":36,"ima_formula":90,"mindat_formula":91,"hmin":92,"hmax":93,"dmeas":94,"dcalc":95,"primary_image_id":96},2793,"Motukoreaite","Mg\u003Csub>6\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>[Na(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>](SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 6H\u003Csub>2\u003C\u002Fsub>O","Mg\u003Csub>6\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>[Na(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>][SO\u003Csub>4\u003C\u002Fsub>]\u003Csub>2\u003C\u002Fsub>·6H\u003Csub>2\u003C\u002Fsub>O",1,1.5,"1.48","1.478",16783,{"id":98,"name":99,"entrytype":9,"csystem":100,"ima_formula":101,"mindat_formula":102,"hmin":11,"hmax":11,"dmeas":39,"dcalc":39,"primary_image_id":11},10812,"Natroglaucocerinite","Hexagonal","Zn\u003Csub>6\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>[Na(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>](SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 6H\u003Csub>2\u003C\u002Fsub>O","Zn\u003Csub>6\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>[Na(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>](SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·6H\u003Csub>2\u003C\u002Fsub>O",{"id":104,"name":105,"entrytype":9,"csystem":36,"ima_formula":106,"mindat_formula":107,"hmin":44,"hmax":44,"dmeas":108,"dcalc":109,"primary_image_id":110},10934,"Nikischerite","Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>6\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>[Na(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>](SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 6H\u003Csub>2\u003C\u002Fsub>O","Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>6\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>[Na(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>](SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·6H\u003Csub>2\u003C\u002Fsub>O","2.33","2.30",17700,{"id":112,"name":113,"entrytype":9,"csystem":36,"ima_formula":114,"mindat_formula":115,"hmin":93,"hmax":93,"dmeas":116,"dcalc":117,"primary_image_id":11},4271,"Wermlandite","Mg\u003Csub>7\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>[Ca(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>](SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 6H\u003Csub>2\u003C\u002Fsub>O","Mg\u003Csub>7\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>(OH)\u003Csub>18\u003C\u002Fsub>[Ca(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>][SO\u003Csub>4\u003C\u002Fsub>]\u003Csub>2\u003C\u002Fsub>· 6H\u003Csub>2\u003C\u002Fsub>O","1.932","1.96",[],[120],{"id":121,"name":122,"entrytype":9,"csystem":123,"ima_formula":124,"mindat_formula":125,"hmin":126,"hmax":126,"dmeas":127,"dcalc":128,"primary_image_id":129},2352,"Lawsonbauerite","Monoclinic","Mn\u003Csup>2+\u003C\u002Fsup>\u003Csub>9\u003C\u002Fsub>Zn\u003Csub>4\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>(OH)\u003Csub>22\u003C\u002Fsub> · 8H\u003Csub>2\u003C\u002Fsub>O","(Mn\u003Csup>2+\u003C\u002Fsup>,Mg)\u003Csub>9\u003C\u002Fsub>Zn\u003Csub>4\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>(OH)\u003Csub>22\u003C\u002Fsub>·8H\u003Csub>2\u003C\u002Fsub>O",4.5,"2.87","2.92",10918,[131],{"id":132,"txt":133,"latitude":134,"longitude":135,"country":136},2190,"Ioi mine, Kusatsu City, Shiga Prefecture, Japan",34.988505,135.9789,"Japan",12,[139,143,147,152,156,159,163],{"id":140,"year":141,"html":142,"doi":11},16108233,1986,"Hawthorne, F.C., Bladh, K.W., Burke, E.A.J., Ercit, S., Grew, E.S., Grice, J.D., Puziewicz, J., Roberts, A.C., Schedler, R.A., Shigley, J.E. (1986) New mineral names. American Mineralogist: 71: 1543-1548.",{"id":144,"year":145,"html":146,"doi":11},15952649,1987,"Peacor, D.R., Dunn, P.J., Simmons, W.B., Ramik, R.A. (1987) Ferristrunzite, a new member of the strunzite group, from Blaton, Belgium. Neues Jahrbuch für Mineralogie, Monatshefte 1987, Heft 10, 453-457.",{"id":148,"year":149,"html":150,"doi":151},1847,1992,"Pring, A., Slade, P. G., Birch, W. D. (1992) Shigaite from Iron Monarch, South Australia. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  56 (384) 417-419 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1992.056.384.15'>doi:10.1180\u002Fminmag.1992.056.384.15\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_56\u002F56-384-417.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1992.056.384.15",{"id":153,"year":154,"html":155,"doi":11},15938240,1996,"Jambor, J.L., Kovalenker, V.A., Puziewics, J., Roberts, A.C. (1996) New mineral names. American Mineralogist: 81: 1282-1286.",{"id":157,"year":154,"html":158,"doi":11},16770762,"Cooper, Mark A., Hawthorne, Frank C. (1996) The crystal structure of shigaite, [AlMn\u003Csup>2+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>(OH)\u003Csub>6\u003C\u002Fsub>]\u003Csub>3\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>Na(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>6\u003C\u002Fsub>, a hydrotalcite group mineral. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  34 (1) 91-97 \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FCM34_91.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":160,"year":161,"html":162,"doi":11},16967290,2005,"(2005) Shigaite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fshigaite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":164,"year":165,"html":166,"doi":167},244281,2012,"Mills, S. J.; Christy, A. G.; Génin, J.-M. R.; Kameda, T.; Colombo, F. (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  76 (5). 1289-1336 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2012.076.5.10'>doi:10.1180\u002Fminmag.2012.076.5.10\u003C\u002Fa>","10.1180\u002Fminmag.2012.076.5.10",[169,179,189,198,207,214,222,230,238,244,251,259,265,273,280,288,294,301,308,315,321,327,334,341,347,353],{"id":170,"source_url":171,"license_code":172,"credit_html":173,"title":174,"description":175,"author":176,"original_width":177,"original_height":178},22197,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10163678","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10163678\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-229887.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 1.6 x .8 x .3 cm.\u003C\u002Fdd>\n\u003Cdd>A large (1.6 cm) single crystal of Shigaite that is lustrous, gemmy, and bi-colored. Ex. Charlie Key Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",500,368,{"id":180,"source_url":181,"license_code":182,"credit_html":183,"title":184,"description":185,"author":186,"original_width":187,"original_height":188},22200,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=109666032","CC BY-SA 4.0","掬茶, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=109666032\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite displayed at Mining Museum of Akita University.jpg","Shigaite exhibited at the Mining Museum of Akita University","掬茶",2400,1800,{"id":190,"source_url":191,"license_code":172,"credit_html":192,"title":193,"description":194,"author":195,"original_width":196,"original_height":197},79308,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=14866751","Leon Hupperichs, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=14866751\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-113801.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Field of view 4 mm. Specimen and photo Leon Hupperichs.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Leon Hupperichs",773,568,{"id":199,"source_url":200,"license_code":172,"credit_html":201,"title":202,"description":203,"author":204,"original_width":205,"original_height":206},79310,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=20548627","Chris857, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=20548627\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite - Cannon Mine, Stambaugh, Michigan.jpg","Hexagonal crystals of \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002Fshigaite\" class=\"extiw\" title=\"w:shigaite\">shigaite\u003C\u002Fa> from the Cannon Mine, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FStambaugh,_Michigan\" class=\"extiw\" title=\"w:Stambaugh, Michigan\">Stambaugh, Michigan\u003C\u002Fa>. Held in the \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FA._E._Seaman_Mineral_Museum\" class=\"extiw\" title=\"w:A. E. Seaman Mineral Museum\">A. E. Seaman Mineral Museum\u003C\u002Fa>.","Chris857",3770,2551,{"id":208,"source_url":209,"license_code":172,"credit_html":210,"title":211,"description":212,"author":176,"original_width":177,"original_height":213},22193,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10138804","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10138804\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-117504.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 9.1 x 6 x 3.5 cm.\u003C\u002Fdd>\n\u003Cdd>This piece features a superb .7cm Shigaite crystal with classic iridescent yellow-to-red color and incredible luster. It guards the gate into the pocket of gloriously sparkling rhodo behind it! Scattered in the beautiful Rhodochrosite pocket are numerous smaller hexagonal blades of shigaite that are gemmy red.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",353,{"id":215,"source_url":216,"license_code":172,"credit_html":217,"title":218,"description":219,"author":176,"original_width":220,"original_height":221},79292,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10138707","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10138707\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-114276.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.5 x 1.8 x 1.0 cm.\u003C\u002Fdd>\n\u003Cdd>A SUPER SHOWY and UNUSUAL combo piece from the Wessels Mine of TWO colors of shigaite perched atop a field of rose-red, gemmy rhodochrosite crystals. A highly lustrous, cherry red shigaite crystal sits at the base of the very flashy golden shigaite crystal \"feather.\" This is a STRIKING cutie, where the overall visual impact is not impaired by the cleavage on the \"feather\" and the modest periphery damage on the rhodos. Shigaite is VERY RARE and the association with rhodochrosite in this piece, makes for an aesthetic treat.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",319,530,{"id":223,"source_url":224,"license_code":172,"credit_html":225,"title":226,"description":227,"author":176,"original_width":228,"original_height":229},22194,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10147625","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10147625\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-160204.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-55925.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 10.0 x 7.8 x 6.0 cm.\u003C\u002Fdd>\n\u003Cdd>This specimen has dark red crystals of the rare manganese species shigaite, ensconced on attractive, sparkling manganite blades and accented by rhodochrosite. It is from a small 1993 pocket and is said to be one of the best of that pocket. It was sold to John Barlow soon after by Charlie Key. An important specimen, this piece at one time was considered one of the world's great specimens for the species and resided in a pre-eminent collection of such rarities (John Barlow's). It still is significant, though others have been found recently of a different style. The new ones are more gracile and fragile-looking but have a metallic lustre and brighter color, whereas these crystals are more robust and dark. Also this matrix association is unique to the 1993 pocket which really did redefine the species in terms of quality. Illustrated in the F. John Barlow Collection book, in his chapter on South Africa.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",800,616,{"id":231,"source_url":232,"license_code":172,"credit_html":233,"title":234,"description":235,"author":176,"original_width":236,"original_height":237},22195,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10150522","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10150522\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-173814.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 9.7 x 5.8 x 3.5 cm.\u003C\u002Fdd>\n\u003Cdd>This specimen features a 1.6 cm, gemmy, dark cherry-red compound shigaite crystal placed in a large vug covered with very sparkly, transparent, rose-red rhodochrosite crystals, which are, in turn, sprinkled with gemmy, cherry-red, micro shigaite crystals. Ex. Rob Smith Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",404,371,{"id":239,"source_url":240,"license_code":172,"credit_html":241,"title":242,"description":212,"author":176,"original_width":243,"original_height":177},79293,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10138805","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10138805\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-117505.jpg",458,{"id":245,"source_url":246,"license_code":172,"credit_html":247,"title":248,"description":249,"author":176,"original_width":177,"original_height":250},22196,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10159212","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10159212\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-201388.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-55925.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 2.7 x 2.4 x 1.7 cm.\u003C\u002Fdd>\n\u003Cdd>A superb bladed, dark reddish crystal of Shigaite on Rhodochrosite is covered by additional yellow\u002Fgolden shigaite crystals. This is a super thumbnail from a small and unusual find, according to Charlie. The vitreous luster is fantastic, the combination fascinating. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",479,{"id":252,"source_url":253,"license_code":172,"credit_html":254,"title":255,"description":256,"author":176,"original_width":257,"original_height":258},79294,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139502","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139502\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-118940.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 4.3 x 3.3 x 1.5 cm.\u003C\u002Fdd>\n\u003Cdd>A beautiful and excellent combination specimen of a solid crust of very sparkly, transparent, rose-red rhodochrosite crystals RICHLY covered with gemmy, cherry-red, micro shigaite crystals on matrix from the famous N’Chwaning II Mine. This piece comes from a small recent find and is exceptional material with the extensive shigaite coverage.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",492,625,{"id":260,"source_url":261,"license_code":172,"credit_html":262,"title":263,"description":256,"author":176,"original_width":250,"original_height":264},79295,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139503","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139503\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-118942.jpg",426,{"id":266,"source_url":267,"license_code":172,"credit_html":268,"title":269,"description":270,"author":176,"original_width":271,"original_height":272},22198,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165335","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165335\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-240119.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.5 x 2.9 x 0.7 cm.\u003C\u002Fdd>\n\u003Cdd>Shigaite is a very rare aluminum manganese sulfate. This fine miniature features a beautifully placed, 6 mm cluster of tabular, hexagonal, dark cherry-red shigaite crystals on a mounded clusters of very sparkly, translucent, rose-red rhodochrosite crystals, which are sprinkled with micro shigaite crystals. This piece comes from a small recent find and is highly representative of both species.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",750,632,{"id":274,"source_url":275,"license_code":172,"credit_html":276,"title":277,"description":278,"author":176,"original_width":177,"original_height":279},79296,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140338","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140338\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Rhodochrosite-Shigaite-120834.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 12.2 x 11 x 10 cm.\u003C\u002Fdd>\n\u003Cdd>A visually very impressive pocket of sparkly balls of drusy Rhodochrosite covered with Shigaites. The largest of the balls is almost 2 cm across, and they all display quite well in the exposed pocket. Of great interest is the fact that the Rhodochrosite is populated with what must be a hundred Shigaite crystals about 1mm in size. Interestingly, these Shigaite crystals are more prismatic in habit rather than the hexagonal blades.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",427,{"id":281,"source_url":282,"license_code":172,"credit_html":283,"title":284,"description":285,"author":176,"original_width":286,"original_height":287},22199,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10446190","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10446190\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Rhodochrosite-Shigaite-cktsr-4a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 3.2 x 2.5 x 1.5 cm\n\u003Cdl>\u003Cdt>SHIGAITE on RHODOCHROSITE\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A beautiful specimen, complete 360 degrees, hosting a translucent 2 cm shigaite perched on sparkly rhodo crystals! This is a piece of major importance in the world of rarities, and Charlie felt that for combination of size and aesthetics it was the best miniature from the find of the early 1980s that he could keep in his suite of personal Kalahari rarities of miniature size - this was in fact the pride of the collection, I'd say. it is NOT the fragile, thin, disclike crystal you expect to see form looking at the recently mined material. it is very thick, sturdy, and easily packed for shipping. Although a \"toenail\" size, it is important enough to take its place in a miniatures or rarities suite of stature, and is really irreplaceable.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",400,257,{"id":289,"source_url":290,"license_code":172,"credit_html":291,"title":292,"description":227,"author":176,"original_width":293,"original_height":286},79298,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10147627","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10147627\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-160205.jpg",345,{"id":295,"source_url":296,"license_code":172,"credit_html":297,"title":298,"description":299,"author":176,"original_width":286,"original_height":300},79299,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10148178","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10148178\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-163203.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-55925.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 6 x 3.4 x 2.2 cm.\u003C\u002Fdd>\n\u003Cdd>TWO sharp, metallic, beautiful shigaite crystals are dramatically displayed here…they are literally metallic in lustre, and this locality has produced the worlds best of species by far for the reasons of sheer beauty and size. The crystals are about 6 and 4mm. They are perched on sparkling, fake-looking rhodochrosite matrix that itself is so shiny and lustrous that it is nearly metallic in lustre. Overall a beautiful plate and a stunning specimen. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",360,{"id":302,"source_url":303,"license_code":172,"credit_html":304,"title":305,"description":306,"author":176,"original_width":228,"original_height":307},79300,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10151648","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10151648\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-177544.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-55925.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 5.6 x 4.4 x 2.6 cm.\u003C\u002Fdd>\n\u003Cdd>This specimen has impressively large, wine-red crystals of the rare manganese species shigaite, ensconced on attractive, sparkling manganite blades and accented by rhodochrosite. It is from a small 1993 pocket. Ex. Charlie Key Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",791,{"id":309,"source_url":310,"license_code":172,"credit_html":311,"title":312,"description":313,"author":176,"original_width":177,"original_height":314},79301,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10152994","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10152994\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-180737.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.8 x 3.5 x 1.5 cm.\u003C\u002Fdd>\n\u003Cdd>Shigaite is a rare aluminum manganese sulfate. This showy and excellent crust features a well-placed strand of gemmy, dark cherry-red compound shigaite crystals placed across the top of the rich coverage of very sparkly, transparent, rose-red rhodochrosite crystals, which are sprinkled with gemmy, cherry-red, micro shigaite crystals.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",513,{"id":316,"source_url":317,"license_code":172,"credit_html":318,"title":319,"description":249,"author":176,"original_width":177,"original_height":320},79302,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10159209","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10159209\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-201387.jpg",412,{"id":322,"source_url":323,"license_code":172,"credit_html":324,"title":325,"description":326,"author":176,"original_width":286,"original_height":293},79303,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10163888","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10163888\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-230621.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 2.0 x 1.1 x 0.9 cm.\u003C\u002Fdd>\n\u003Cdd>Shigaite is a very rare aluminum manganese sulfate. This fine thumbnail features a gemmy, 9mm, tabular, hexagonal, dark cherry-red shigaite crystal placed atop a mounded clusters of very sparkly, transparent, rose-red rhodochrosite crystals, which are richly sprinkled with gemmy, cherry-red, micro shigaite crystals. This piece comes from a small recent find and is highly representative of both species.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",{"id":328,"source_url":329,"license_code":172,"credit_html":330,"title":331,"description":270,"author":176,"original_width":332,"original_height":333},79304,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165336","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165336\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite-Rhodochrosite-240121.jpg",600,574,{"id":335,"source_url":336,"license_code":172,"credit_html":337,"title":338,"description":339,"author":176,"original_width":286,"original_height":340},79305,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10460904","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10460904\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Rhodochrosite-Shigaite-rare08-2-61c.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning I Mine, N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3068.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 5.6 x 4.4 x 2.6 cm\n\u003Cdl>\u003Cdt>Shigaite with Rhodochrosite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This specimen has impressively large, wine-red crystals of the rare manganese species shigaite, ensconced on attractive, sparkling manganite blades and accented by rhodochrosite. It is from a small 1993 pocket and is said to be one of the best of that pocket . In fact, this was said by Charlie Key himself who brought out the majority of pieces at the time, and then he KEPT THIS PIECE until selling a South African assemblage suite from the collection a few years ago to Harvard, from which this piece came to me because the donor who bought the group kept a few things. An important specimen, this piece at one time was considered one of the world's great specimens for the species and from the only great find for the species. This has changed, only slightly, recently. It still is significant, though others have been found recently of a different style. The new ones are more gracile and fragile-looking (almost like hexagonal red mica blades) although they have a metallic lustre and brighter color, whereas these crystals are more robustly 3-dimensional and darker wine-red. Also this matrix association is unique to the 1993 pocket which really did redefine the species in terms of quality compared to anything imagined previously from micros found in Japan. Another example from this famous pocket is illustrated in the F John Barlow Collection book, in his chapter on South Africa, and is also on this website (item T08-68) . The specimens were dispersed, as you can see, into the major collectors' hands of the time. Charlie, however, kept a few - among them this one.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",322,{"id":342,"source_url":343,"license_code":172,"credit_html":344,"title":345,"description":346,"author":176,"original_width":228,"original_height":229},79306,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465820","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465820\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Rhodochrosite-Shigaite-t08-68a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FShigaite\" class=\"extiw\" title=\"en:Shigaite\">Shigaite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning I Mine, N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3068.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 10.0 x 7.8 x 6.0 cm\n\u003Cdl>\u003Cdt>Shigaite, Rhodochrosite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This specimen has dark red crystals of the rare manganese species shigaite, ensconced on attractive, sparkling manganite blades and accented by rhodochrosite. It is from a small 1993 pocket and is said to be one of the best of that pocket. It was sold to John barlow soon after by Charlie Key. An important specimen, this piece at one time was considered one of the world's great specimens for the species and resided in a pre-eminent collection of such rarities (John Barlow's). It still is significant, though others have been found recently of a different style. The new ones are more gracile and fragile-looking but have a metallic lustre and brighter color, whereas these crystals are more robust and dark. Also this matrix association is unique to the 1993 pocket which really did redefine the species in terms of quality. Illustrated in the F John Barlow Collection book, in his chapter on South Africa.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",{"id":348,"source_url":349,"license_code":172,"credit_html":350,"title":351,"description":346,"author":176,"original_width":352,"original_height":286},79307,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465825","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465825\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Rhodochrosite-Shigaite-t08-68c.jpg",377,{"id":354,"source_url":355,"license_code":172,"credit_html":356,"title":357,"description":358,"author":204,"original_width":359,"original_height":360},79309,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=20523510","Chris857, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=20523510\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Shigaite (A.E. Seaman Mineral Museum).jpg","Hexagonal crystal of \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002Fshigaite\" class=\"extiw\" title=\"w:shigaite\">shigaite\u003C\u002Fa> (near the top) from the Cannon mine in \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FStambaugh,_Michigan\" class=\"extiw\" title=\"w:Stambaugh, Michigan\">Stambaugh, Michigan\u003C\u002Fa>. Held in the \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FA._E._Seaman_Mineral_Museum\" class=\"extiw\" title=\"w:A. E. Seaman Mineral Museum\">A. E. Seaman Mineral Museum\u003C\u002Fa>.",1298,1374,[362],{"id":363,"url":364,"label":365,"formula":366,"spacegroup":367,"year":154},12687,"\u002Fcif\u002F12687.cif","Cooper 1996","Mn6 Al3 Na S2 H42 O38","R -3",[369,370],"IMA1984-057","Shigaiet",[372,376,381,385,389,393,397,400,404,407,410],{"lang":373,"names":374},"ca",[369,375],"shigaïta",{"lang":377,"names":378},"de",[379,380],"IMA 1984-057","Shigait",{"lang":382,"names":383},"es",[384],"shigaíta",{"lang":386,"names":387},"eu",[388],"Shigaita",{"lang":390,"names":391},"fa",[392],"شیگائیت",{"lang":394,"names":395},"fr",[396],"shigaite",{"lang":398,"names":399},"it",[396],{"lang":401,"names":402},"ja",[403],"滋賀石",{"lang":405,"names":406},"nl",[396],{"lang":408,"names":409},"oc",[396],{"lang":411,"names":412},"pl",[380],"Q13112",{"history":11,"applications":11}]